Year	constant 2011 international $
1995	25017.8648963924
1996	26822.0330499732
1997	28995.1967377471
1998	30956.5539612981
1999	32914.868337178
2000	35491.9340766505
2001	35939.0479438465
2002	36718.4392288908
2003	38353.9797460909
2004	40450.8618959676
2005	41953.2209076588
2006	43478.0610775201
2007	43885.7488272398
2008	41106.6717697715
2009	37224.8340493829
2010	37811.0183008082
2011	36448.6409882532
2012	36113.1215136254
2013	38116.4179942344
2014	41156.819984568
2015	45483.2364343849
2016	49921.350518471
2017	52322.3324521045